计量学报Issue(6)：545-549,5.DOI:10.3969/j.issn.1000-1158.2014.06.05
直流偏磁与剩磁对测量用电流互感器影响的实验与分析
Experiment and AnaIysis of the Measuring Current Transformer with DC Bias and Remnant FIux
申路 1赵书涛 1张佩 1田晓倩1
作者信息
- 1. 华北电力大学电气与电子工程学院，河北 保定071003
- 折叠
摘要
Abstract
DC bias and remnant fIux wiII change the measuring current transfOrmer wOrking pOint in the cOre magnetizatiOn curve and have a direct impact On the accuracy Of eIectric energy measurement. An errOr measurement methOd based On the aIgOrithm fOr three-parameter Ieast squares fit tO sine wave is put fOrward and the infIuence Of DC bias and remnant fIux On errOr characteristics Of current transfOrmer is aIsO investigated thrOugh experiments. The experimentaI data shOws that DC bias and remnant fIux wiII increase the ratiO errOr and phase dispIacement in OppOsite directiOns and the ratiO and phase dispIacement wiII be far mOre than the Iimit vaIue when they are exist in same directiOn at the same time . This wiII seriOusIy affect the transmissiOn accuracy Of current transfOrmer.关键词
计量学/测量用电流互感器/直流偏磁/剩磁/比差/角差Key words
MetrOIOgy/Measuring current transfOrmer/DC bias/Remnant fIux/RatiO errOr/Phase dispIacement分类
通用工业技术引用本文复制引用
申路,赵书涛,张佩,田晓倩..直流偏磁与剩磁对测量用电流互感器影响的实验与分析[J].计量学报,2014,(6):545-549,5.
